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Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2017
Schedule Of Share Based Compensation Warrants Activity [Table Text Block] | The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:
Expected life |  |  | 6.25 years |
Weighted average volatility |  |  | 69% |
Forfeiture rate |  |  | 13% |
Weighted average risk-free interest rate |  |  | 1.90% |
Expected dividend rate |  |  | 0% |
Warrant [Member] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The Company has the following warrants outstanding at June 30, 2017:
|  |  |  |  |  | Wtd. Avg. |  |  |
|  |  |  |  |  | Exercise |  | Remaining Life |
Exercise Price |  |  | Warrants |  | Price |  | (in years) |
| $1.80 |  |  |  | 80,000 |  |  | $1.80 |  |  | 3.64 |
| $4.00 |  |  |  | 2,395,471 |  |  | $4.00 |  |  | 1.57 |
| $10.00 |  |  |  | 20,313 |  |  | $10.00 |  |  | 1.68 |
|  |  |  |  | 2,495,784 |  |  | $3.98 |  |  |  |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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